(a) A judicial hearing officer shall not preside over any matter in which he or she has represented any party or any witness in connection with that matter, and he or she shall not participate as an attorney in any matter in which he or she has participated as a judge or judicial hearing officer.

(b) A judicial hearing officer shall not preside over a matter in which any party or witness is presented by an attorney who is a partner or associate in a law firm or of counsel to a law firm with which the judicial hearing officer is affiliated in any respect.

(c) A judicial hearing officer shall not participate as an attorney or, unless appointed by the court on terms including receipt of compensation pursuant to section 122.8 of this Part, as a referee, mediator, or arbitrator, or similar officer in any contested matter in a court in a county where he or she serves on a judicial hearing officer panel for such court.

(d) A judicial hearing officer shall not appear as an attorney before any other judicial hearing officer in any county in which he or she serves as a judicial hearing officer.